... 5.knock down for package, The 2011 hottest medium back swivel chair 70B Nobody knows where is confidence from ,but when ... , provide certificate. 6,Color: black and orange , color changeable 7,Surface material,the material on the picture are PU +PVC ... .Warrantynormal circumstances three years against manufacture defect,offer lifetime consultaion. 7.MOQ and delivery1*40HQ, can mix model , at least ...